How to get two-channel optical flow images

[BBBBBBob]

Hi all,

I have tried to get two-channel optical flow images as an input in the neural network.
However, I have confronted the same problem in #4414, in which I can only get either a one-channel image or a three-channel image.
Has anyone obtained the two-channel optical flow image successfully?
I would be very grateful if you could offer some help.

[KaiXin-Chen]

I just had the same issue. The pfm it generates only have one channel. Did you find a solution?